Zech 12:10, Acts 2:36-37

In the Old Testament, the Israelites who returned from captivity read the Book of the Law and confessed their sins. (Ne 9:3)

Ne 9:3 And they stood up in their place, and read in the book of the law of the Lord their God one fourth part of the day; and another fourth part they confessed, and worshipped the Lord their God.

In the Old Testament it was prophesied that the Israelites would weep when they saw Christ dying for them. (Zec 12:10)

Zec 12:10 And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for his only son, and shall be in bitterness for him, as one that is in bitterness for his firstborn.

The Israelites repented when they realized that Jesus, whom they had crucified, was the Christ. (Acts 2:36-37)

Acts 2:36 Therefore let all the house of Israel know assuredly, that God hath made the same Jesus, whom ye have crucified, both Lord and Christ. 37 Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?